Update actions/checkout action to v6 (#154)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/desktop_web.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with:

.github/workflows/mobile_native.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         test: [ best-practice-mobile-native-us-android, best-practice-mobile-native-us-ios]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with:

.github/workflows/mobile_web.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         test: [ best-practice-mobile-web-vdc-us, best-practice-mobile-web-rdc-us]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with:

.github/workflows/python.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         test: [ best-practice-desktop-us, demo]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with:

.github/workflows/robot_desktop_web.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with: